Isfandiyor Djamalutdinov
03/18/2026, 7:21 AMMarvin
03/18/2026, 7:21 AMMarvin
03/18/2026, 7:22 AMcurl -I <https://your-old-mcp-url.example.com>
If it times out or returns 4xx/5xx consistently, it’s likely gone.
- Check your client config for cached URLs:
- Claude Desktop: look in your MCP server settings (where you added the server).
- VS Code/Cursor/other MCP clients: check their MCP config or settings JSON for server endpoints.
- If you used a custom domain, look up its DNS. If it still CNAMEs/points to a FastMCP-owned domain, you’ll need to repoint it after redeploy.
- Check your source repo you deployed from (FastMCP Cloud commonly built directly from a Git repo). That’s your canonical code to redeploy.
What you’ll need to redeploy
- The MCP server source code (from your Git repo or local copy)
- Any secrets/env vars that were configured in FastMCP Cloud (you’ll need to recreate these)
- A hosting target. Common options:
- A VM or container host (Docker on a small VM)
- Render/Railway/Fly.io/Cloud Run/Heroku-ish platforms
- Kubernetes, if you already have a cluster
- Health probe and port configuration matching how your MCP server expects to run (HTTP/WebSocket/etc.)
Minimal self-hosting example (Docker)
- If your MCP server starts on port 8000:
docker build -t my-mcp-server .
docker run -d -p 8000:8000 --name my-mcp -e YOUR_ENV=... my-mcp-server
- Or with docker-compose:
services:
mcp:
build: .
ports:
- "8000:8000"
environment:
YOUR_ENV: "value"
restart: unless-stopped
If you share a bit more, I can be much more specific:
- The last-known URLs or server names
- Whether you used a custom domain
- The Git repo(s) those servers were built from
- Which MCP client you connect with (Claude Desktop, VS Code, etc.)
- Any special runtime needs (WebSockets, specific ports, background workers)
With that, I can help you:
- Validate whether anything is still reachable
- Map out a concrete redeploy plan (including a Dockerfile or service config)
- Suggest a hosting platform with the right protocol support for your MCP servers
- Provide a step-by-step migration checklist (env vars, secrets, DNS, health checks)